Mr. harden's class decides to perform an experiment to determine how long it takes different objects to hit the floor when dropped from a desk. the class dropped three balls from a desk, one weighing 2 pounds, one weighing 4 pounds, and one weighing six pounds. it took them all the same amount of time to hit the floor. after evaluating these results, you predict that a 10 pound ball will take a) more time to hit the floor. b) less time to hit the floor. c) about the same amount of time to hit the floor. d) an unknown amount of time before hitting the floor.
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Physics, 22.06.2019 05:40
Karen is running forward at a speed of 9 m/s. she tosses her sweaty headband backward at a speed of 20 m/s. the speed of the headband, to the nearest whole number relative to a stationary observer watching karen
Answers: 1
Physics, 22.06.2019 17:30
Ethanol has a heat of vaporization of 38.56 kj/mol and a normal boiling point of 78.4 c. what is the vapor pressure of ethanol at 14 c?
Answers: 3
Physics, 22.06.2019 18:30
Ablock of mass m slides on a horizontal frictionless table with an initial speed v0 . it then compresses a spring of force constant k and is brought to rest. the acceleration of gravity is 9.8 m/s2. how much is the spring compressed x from its natural length? 1) x = v0*sqrt(k/(mg)) 2) x=v0*sqrt(m/k) 3) x=v0*((mk)/g) 4) x=v0*sqrt(k/m) 5) x=v0*(m/kg) 6) x=v0*sqrt((mg)/k) 7) x=(v0)^2/(2g) 8) x=v0*(k/(mg)) 9) x=(v0)^2/(2m) 10) x=v0*((mg)/k)
Answers: 3
Physics, 23.06.2019 04:31
Ivana walks 2km north then turns around and walks 3km south
Answers: 1
Mr. harden's class decides to perform an experiment to determine how long it takes different objects...
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